CVE-2026-19662

MediumCVSS 5.9/10Last modified Oct 26, 2026

Description

An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-416

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
ISCBIND 9>= 9.11.0, <= 9.18.50; >= 9.20.0, <= 9.20.27; >= 9.11.3-S1, <= 9.18.50-S1; >= 9.20.9-S1, <= 9.20.27-S1

References

Timeline

Published
Sep 16, 2026
Last modified
Oct 26, 2026
NVD status
Awaiting Analysis

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